I purchased a Sony NSZ GS7 which generally I am happy with. I purchased the device from ebay but the firmware is the US firmware (REL03_NSZGS7_U2_1104_4384_20120724_URSC_S67254), this means as I live in the UK my post code isn't recognised. Can I flash the device with the UK firmware. If this is possible how do I do this and where do I download the firmware from. Many thanks for any help given.